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Xiaoyao Li 1896409282 KVM: X86: Reset vcpu->arch.cpuid_nent to 0 if SET_CPUID* fails 
Current implementation keeps userspace input of CPUID configuration and
cpuid->nent even if kvm_update_cpuid() fails. Reset vcpu->arch.cpuid_nent
to 0 for the case of failure as a simple fix.

Besides, update the doc to explicitly state that if IOCTL SET_CPUID*
fail KVM gives no gurantee that previous valid CPUID configuration is
kept.

Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
Message-Id: <20200708065054.19713-2-xiaoyao.li@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-07-08 16:22:00 -04:00
arch
KVM: X86: Reset vcpu->arch.cpuid_nent to 0 if SET_CPUID* fails
2020-07-08 16:22:00 -04:00
block
Merge tag 'kbuild-v5.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
2020-06-13 13:29:16 -07:00
certs
.gitignore: add SPDX License Identifier
2020-03-25 11:50:48 +01:00
crypto
Merge branch 'rwonce/rework' of git://git.kernel.org/pub/scm/linux/kernel/git/will/linux
2020-06-10 14:46:54 -07:00
Documentation
KVM: X86: Reset vcpu->arch.cpuid_nent to 0 if SET_CPUID* fails
2020-07-08 16:22:00 -04:00
drivers
KVM: arm64: vgic-v4: Plug race between non-residency and v4.1 doorbell
2020-06-23 11:24:39 +01:00
fs
Merge tag 'for-5.8-part2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
2020-06-14 09:47:25 -07:00
include
kvm: x86: Add "last CPU" to some KVM_EXIT information
2020-07-08 16:21:45 -04:00
init
Merge tag 'kbuild-v5.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
2020-06-13 13:29:16 -07:00
ipc
mmap locking API: use coccinelle to convert mmap_sem rwsem call sites
2020-06-09 09:39:14 -07:00
kernel
x86/kvm: Add "nopvspin" parameter to disable PV spinlocks
2020-07-08 16:21:57 -04:00
lib
Merge tag 'kbuild-v5.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
2020-06-13 13:29:16 -07:00
LICENSES
LICENSES: Rename other to deprecated
2019-05-03 06:34:32 -06:00
mm
Merge tag 'kbuild-v5.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
2020-06-13 13:29:16 -07:00
net
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2020-06-13 16:27:13 -07:00
samples
binderfs: add gitignore for generated sample program
2020-06-13 13:41:24 -07:00
scripts
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2020-06-13 16:27:13 -07:00
security
Merge tag 'LSM-add-setgid-hook-5.8-author-fix' of git://github.com/micah-morton/linux
2020-06-14 11:39:31 -07:00
sound
Merge tag 'kbuild-v5.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
2020-06-13 13:29:16 -07:00
tools
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2020-06-13 16:27:13 -07:00
usr
bpfilter: match bit size of bpfilter_umh to that of the kernel
2020-05-17 18:52:01 +09:00
virt
KVM: async_pf: change kvm_setup_async_pf()/kvm_arch_setup_async_pf() return type to bool
2020-07-08 16:21:36 -04:00
.clang-format
block: add bio_for_each_bvec_all()
2020-05-25 11:25:24 +02:00
.cocciconfig
scripts: add Linux .cocciconfig for coccinelle
2016-07-22 12:13:39 +02:00
.get_maintainer.ignore
Opt out of scripts/get_maintainer.pl
2019-05-16 10:53:40 -07:00
.gitattributes
.gitattributes: use 'dts' diff driver for dts files
2019-12-04 19:44:11 -08:00
.gitignore
modpost: generate vmlinux.symvers and reuse it for the second modpost
2020-06-06 23:38:12 +09:00
.mailmap
Merge tag 'docs-5.8' of git://git.lwn.net/linux
2020-06-01 15:45:27 -07:00
COPYING
COPYING: state that all contributions really are covered by this file
2020-02-10 13:32:20 -08:00
CREDITS
mailmap: change email for Ricardo Ribalda
2020-05-25 18:59:59 -06:00
Kbuild
kbuild: rename hostprogs-y/always to hostprogs/always-y
2020-02-04 01:53:07 +09:00
Kconfig
kbuild: ensure full rebuild when the compiler is updated
2020-05-12 13:28:33 +09:00
MAINTAINERS
Merge branch 'i2c/for-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
2020-06-13 13:12:38 -07:00
Makefile
Linux 5.8-rc1
2020-06-14 12:45:04 -07:00
README
Drop all 00-INDEX files from Documentation/
2018-09-09 15:08:58 -06:00

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.
Description
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